Docker to sudoers

Introduction

In this guide, we will learn how to allow a Docker user to run Docker commands without requiring sudo privileges. By default, Docker commands require sudo privileges, which can be inconvenient for developers and may cause security concerns. By following the steps in this guide, you will be able to add a Docker user to the sudoers file and allow them to run Docker commands without sudo.

Prerequisites

• Linux operating system (e.g., Ubuntu, CentOS)
• Docker installed and configured
• Basic knowledge of the command line

Steps

1. Open a terminal and log in to your Linux system using a user with sudo privileges.

2. Run the following command to open the sudoers file using the nano text editor:

   sudo visudo
   

3. Scroll down to the section that starts with %sudo and locate the line:

   %sudo   ALL=(ALL:ALL) ALL
   

4. Add the following line below that line to allow the Docker user to run Docker commands without sudo:

   <docker_username>  ALL=(ALL) NOPASSWD: /usr/bin/docker
   

   Replace <docker_username> with the actual username of the Docker user.

5. Save and exit the sudoers file by pressing Ctrl+X, then Y, and finally Enter.

6. Now, the Docker user should be able to run Docker commands without sudo. You can test it by opening a new terminal window and running a Docker command, such as docker run hello-world.

   Note: If you have multiple Docker users, you can repeat steps 4-6 for each user.

Conclusion

Congratulations! You have successfully added a Docker user to the sudoers file and allowed them to run Docker commands without requiring sudo privileges. This streamlines the Docker workflow for developers and improves productivity. Remember to exercise caution when modifying the sudoers file, as incorrect changes can potentially compromise system security.